Some Fungi from Tibet. 
BY 
MALCOLM WILSON, D.Sc., F.L.S., F.R.S.E., 
Lecturer in Mycology in the University of Edinburgh. 
With Plate CLXIX. 
THE fungi described below were found on plants collected by 
Mr G. Forrest during July 1917 on the Mekong-Salween divide, 
in Tibet. 
Aecidium sino-rhododendri, n. sp. 
Maculis nullis. Aecidiis hypophyllis irregulariter dispositis, 
gregariis raro solitariis, pseudoperidiis cupulatis, albido-flavis 
circiter .5 mm. diam., breve cylindricis demum late apertis, 
margine lacero-dentato revoluto, aecidiosporis ellipticis, episporio 
dense verruculosis, 27~37p x 20-25. 
Hab. in foliis vivis Rhododendri calvescentis, Balf. f. et 
Forrest,* in S.E. Tibet. G. Forrest. No. 14,331. July 1917. 
In the dried specimens the rather large white aecidia are 
very conspicuous on the brownish leaf (figs. 1 and 2, Plate 
CLXIX). A portion of the wall of the aecidiospore is smooth 
and thinner than the remainder (fig. 3). No spermogonia were 
found in the specimens. 
With the exception of Puccinia Rhododendri, Fuck., a species 
with teleutospores only, occurring on Rhododendron ferrugineum, 
no species of Puccinia or Uromyces have been recorded on 
Rhododendrons. There is no information available regarding 
the other spore forms of Aecidium sino-rhododendri. 
Labridium Rhododendri, n. sp. , 
ey epiphyllis cage orbiculo rufo-brunneo circumdatis, 
I.5-3 mm. diam. Peritheciis gregariis vel sparsis, saepe con- 
catibus: irregularibusque planieane ellipsoideo-oblongis vel 
fusoideis, hysterioideis, rima longitudinali aperta, dimidiatis, 
.4~.9 mm. longis .3-.7 mm. latis, membranaceo-carbonaceis, 
textura solidiuscula, parenchymatica, subimpellucida, atro- 
' “New Species of Rhododendron, ” Prof. Bayley Balfour, — from the 
a Botanic Garden, Edinburgh, No. ty vol. xi (1919), p. : 
(Notes, R.B.G., Edin., No. LX, January 1921.] : 
